Friday Sep 19, 2014

James Gosling is now chief software architect of the Wave Glider, the flagship product at Liquid Robotics. The Wave Glider is a self-propelled, autonomous marine robot that collects and transmits ocean data. The Wave Glider will be on display exclusively at the Java Hub in the JavaOne exhibit hall during the entire conference.

Since Gosling started at Liquid Robotics, he has re-architected the onboard software and refined a data-as-a-service cloud to provide direct, real-time access to ocean information. Java, which he invented, has played an increasing role in ocean data transmission and analysis.

“Being able to debug and profile robots out at sea is a truly life-altering experience,” Gosling explains. He uses a set of tools—consisting of editors, debuggers, and profilers—that are part of the NetBeans IDE. At the JavaOne 2014 NetBeans Community Day, he will present the session “James Gosling, Robots, the Raspberry Pi, and Small Devices” [UGF8907] on Sunday, September 28. He will also present “Debugging and Profiling Robots with James Gosling” [CON6699] on Wednesday, October 1. Geertjan Wielenga, Mark Heckler, José Pereda, Johannes Weigend, Shai Almog and Jens Deters will join him to discuss those two topics.

Join him as he closes out the JavaOne Community keynote with a fun, historical perspective of the genesis of Java, and a T-shirt toss! The Community Keynote will be held in the Marriott Marquis, Salon 7/8/9, on Thursday, October 2, 2014

Friday Oct 18, 2013

Java Evangelist Stephen Chin is back on the road for a new NightHacking Tour. He is meeting with James Gosling at Kona, Hawaii, the launch base of the Wave Glider. The Glider is an aquatic robot which communicates real-time data from the surface of the ocean. It runs on an ARM chip using Java SE Embedded.

"During this broadcast we will show some of the footage of his aquatic robots, talk through the technologies he is hacking on daily, and do Q&A with folks on the live chat" explains Stephen Chin.

Wednesday Mar 27, 2013

A new article published on the front page of otn/java, by Yogesh Tewari and Rajesh Kawad, of Infosys Limited Labs in Bangalore, India, titled “Real-Time Topic Modeling of Microblogs,” explores “the challenge of real-time extraction of topics from a continuous stream of incoming microblogs or tweets that are particular to an application” that they created. From a simple tweet text, the application is designed to accurately suggest relevant topics discussed in the tweet, and provide real-time timelines of topics generated from the tweet streams.

They explain that this is no simple tasks since a tweet, “considered as a text corpus, contains only 140 characters and second, given their brevity, tweets may not provide useful information and may contain different forms of text such as ‘smileys’ and short-form URLs. Finally, tweets are generated in real time.”

Yogesh and Rajesh apply LDA (latent Dirichlet allocation) to topic model tweets and make use of the Machine Learning for Language Toolkit (MALLET) API as the implementation for LDA – all performed in a Java environment. The LDA implementation is in turn encapsulated within the MALLET API, which here functions as a command line–based Java tool.

As they state: “Our targets are the actual Java classes that perform the LDA logic whose methods we invoke with required input in real-time. Storm is our choice of a free and open source distributed real time computation engine implemented in Java and running in a distributed mode. Storm is highly scalable and easily capable of handling incoming tweet streams. We use Twitter4J to stream tweets, which require valid Twitter authentication. So our task is to design a topology that will consume tweet streams and output a timeline of topics.”Check out the article here.